Road noise and frames/sub frames

[GangsterOfLove]

We don't have to worry about unit construction, which is why even my 3rd Gen is quieter than my much newer Mazda:

Good article that discusses it:

A Crucial Element Needed For A Truly Quiet Car: Subframes | Elevating Sound | Sound, Acoustics, Noise, Audio, Soundscape, Sonic, Quiet, Silent, Tinnitus